Mechanical and Nondestructive Testing to Verify the  Effectiveness of Composite Strengthening  on Historical Cast Iron Bridge  in Venice, Italy

Bastianini, Filippo; Ceriolo, Laura; Tommaso, Angelo Di; Zaffaroni, Giorgio

doi:10.1061/(asce)0899-1561(2004)16:5(407)

Cited by 8 publications

(2 citation statements)

References 3 publications

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“…The equipment for ultrasonic waves is a converter, a pulse generator, a receiver/amplifier and a screen. This method has been used to detect debonding failure of concrete members strengthened by FRP [39] and the failure of iron bridges by strengthened FRP [40]. Muhmouda et al [41] used surface acoustic waves (SAWs) to detect the interface degradation of concrete members strengthened by carbon fiber-reinforced polymer (CFRP) and suggested that this method be used to monitor the structures of concrete bridges strengthened by FRP.…”

Section: Ultrasonic Wavesmentioning

confidence: 99%

Maintenance and Inspection of Fiber-Reinforced Polymer (FRP) Bridges: A Review of Methods

Tang

2021

Materials

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Fiber-reinforced polymers (FRPs) are materials that comprise high-strength continuous fibers and resin polymer, and the resins comprise a matrix in which the fibers are embedded. As the technique of FRP production has advanced, FRPs have attained many incomparable advantages over traditional building materials such as concrete and steel, and thus they play a significant role in the strengthening and retrofitting of concrete structures. Bridges that are built out of FRPs have been widely used in overpasses of highways, railways and streets. However, damages in FRP bridges are inevitable due to long-term static and dynamic loads. The health of these bridges is important. Here, we review the maintenance and inspection methods for FRP structures of bridges and analyze the advantages, shortcomings and costs of these methods. The results show that two categories of methods should be used sequentially. First, simple methods such as visual inspection, knock and dragging-chain methods are used to determine the potential damage, and then radiation, modal analysis and load experiments are used to determine the damage mode and degree. The application of FRP is far beyond the refurbishment, consolidation and construction of bridges, and these methods should be effective to maintain and inspect the other FRP structures.

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Section: Ultrasonic Wavesmentioning

confidence: 99%

Maintenance and Inspection of Fiber-Reinforced Polymer (FRP) Bridges: A Review of Methods

Tang

2021

Materials

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“…Tap-testing can be applied to detect a voided area in an FRP-concrete adhesive joint on construction sites [19]. Nondestructive testing methods such as ultrasonic inspection or infrared thermography have also been investigated [20][21][22][23][24]. Only a limited number of studies have been conducted involving the effect and criticality of defects.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Influence of Bubble Defection on the Bond Strength of Externally Bonded Fiber-Reinforced Polymer-to-Concrete Joints

Chen,

Wu,

Lin

2023

Buildings

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The influences of bubble defects on the bond strengths of externally bonded fiber-reinforced polymer (EB-FRP) concrete joints were investigated using numerical method in this research. Studies of the influences of increasing bubble defect areas on interfacial bonding performance were first conducted. It was observed that the influence of a bubble deficiency located in the middle of the bond region is not significant when the size of the bubble area is less than 2.5% of the effective bond area. Then, further investigation was conducted on the influences of the distances between the bubble and the loaded end, as well as the distance between the bubble and the side of the FRP, the ratio of the bubble’s width to the width of the FRP, the number of bubbles with a fixed total area and the distribution of multiple bubbles. It was found that the distances of the bubble to the loaded end and different numbers of bubbles distributed within a fixed area do not significantly affect the bond strength. When the bubble is positioned closer to the side of the FRP, a decrease in load capacity tends to occur earlier, and the amount of decrease also slightly increases. The bond capacity can be influenced by the shapes of the bubbles, and as the bubble width in the lateral direction increases while keeping the bubble areas constant, the load capacity decreases.

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Strengthening and Retrofitting of Steel Bridges

Jara

Olmos

et al. 2017

Strengthening and Retrofitting of Existing Structures

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Mechanical and Nondestructive Testing to Verify the Effectiveness of Composite Strengthening on Historical Cast Iron Bridge in Venice, Italy

Cited by 8 publications

References 3 publications

Maintenance and Inspection of Fiber-Reinforced Polymer (FRP) Bridges: A Review of Methods

Maintenance and Inspection of Fiber-Reinforced Polymer (FRP) Bridges: A Review of Methods

Numerical Study on the Influence of Bubble Defection on the Bond Strength of Externally Bonded Fiber-Reinforced Polymer-to-Concrete Joints

Strengthening and Retrofitting of Steel Bridges

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